Manual tinting unit



FIG. 1 is a front view of a manual tinting unit showing my new design;

FIG. 2 is a rear view of my invention;

FIG. 3 is a top view of FIG. 1;

FIG. 4 is a bottom view of FIG. 1;

FIG. 5 is a left side view;

FIG. 6 is a right side view of FIG. 1; and,

FIG. 7 is a front perspective view of a manual tinting unit showing my new design. 

The ornamental design for a manual tinting unit, as shown and described. 